Enhanced red emission in Ca0.5La(MoO4)2:Eu3+ phosphors for UV LEDs

RSC Advances ◽  
2015 ◽  
Vol 5 (116) ◽  
pp. 95953-95959 ◽  
Author(s):  
Yurong Shi ◽  
Bitao Liu ◽  
Bo Liu ◽  
Chunyang Li ◽  
Zhenling Wang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Chemical Formula ◽  
Red Emission ◽  
Reaction Method ◽  
Uv Leds

La3+ was introduced into CaMoO4 to form a novel compound with the chemical formula Ca0.5La(MoO4)2 and was synthesized by a solid-state reaction method.

scholarly journals Synthesis and luminescent properties of novel red-emitting M7Sn(PO4)6:Eu3+(M= Sr,Ba) phosphors

2018 ◽  
Vol 12 (1) ◽  
pp. 8-12
Author(s):  
Guo Feng ◽  
Weihui Jiang ◽  
Jianmin Liu ◽  
Cong Li ◽  
Quan Zhang
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Red Light ◽  
Luminescent Properties ◽  
Solid State Reaction Method ◽  
Formula Unit ◽  
Conventional Solid State Reaction ◽  
Light Emitting ◽  
Reaction Method ◽  
Uv Leds

Novel Eu3+-activated M7Sn(PO4)6 (where M = Sr, Ba) red-emitting phosphors were synthesized via conventional solid-state reaction method at 1200 ?C for 2 h. The luminescence properties of the prepared samples and quenching concentration of Sr7-xSn(PO4)6 :xEu3+ and Ba7-xSn(PO4)6 :xEu3+ were investigated. These phosphors can be efficiently excited by UV (395 nm) and visible blue (465 nm) light nicely matching the output wavelengths of the near-UV LEDs and InGaN blue LED chips and emit the red light. The critical concentrations of the Eu3+ activator were found to be 0.175mol and 0.21mol per formula unit for Sr7-xSn(PO4)6 :xEu3+ and Ba7-xSn(PO4)6 :xEu3+, respectively. The M7-xSn(PO4)6 :xEu3+ (M = Sr, Ba) phosphor may be a good candidate for light-emitting diodes application.

A new far-red emission from Zn2SnO4 powder synthesized by modified solid state reaction method

2020 ◽  
Vol 100 ◽  
pp. 109670 ◽  
Author(s):  
L.T.T. Vien ◽  
Nguyen Tu ◽  
Manh Trung Tran ◽  
Nguyen Van Du ◽  
D.H. Nguyen ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Red Emission ◽  
Reaction Method

Synthesis and luminescence of Li2.06Nb0.18Ti0.76O3: Eu3+ Ceramics

2020 ◽  
Vol 13 (05) ◽  
pp. 2051030
Author(s):  
Xi Chen ◽  
Qun Zeng ◽  
Liu Lei ◽  
Chun-Feng Yao ◽  
Chao-Chao Guo ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Fluorescence Spectra ◽  
Sintering Temperature ◽  
Emission Spectra ◽  
Solid State Reaction Method ◽  
Red Emission ◽  
Reaction Method ◽  
Pl Spectra ◽  
Orange Emission

Li[Formula: see text]Nb[Formula: see text]Ti[Formula: see text]O3: Eu[Formula: see text] luminescent ceramics were prepared by the solid-state reaction method. By means of XRD, SEM, density testing, and fluorescence spectra data, the luminescent ceramics were characterized as functions of Eu[Formula: see text] concentration and sintering temperature. With the increase of sintering temperature and Eu[Formula: see text] concentration, the peak intensities of the PLE spectra monitored at 612[Formula: see text]nm and PL spectra excited at 396[Formula: see text]nm were dramatically improved. Li[Formula: see text]Nb[Formula: see text]Ti[Formula: see text]O3: 3[Formula: see text]wt.%Eu[Formula: see text] ceramics sintered at 1120∘C showed the highest PL intensity. The emission spectra showed orange emission at 592[Formula: see text]nm and red emission at 612[Formula: see text]nm, corresponding to the transition of 5D[Formula: see text]F1 and 5D[Formula: see text]F2 of Li[Formula: see text]Nb[Formula: see text]Ti[Formula: see text]O3: Eu[Formula: see text] ceramics.

Fabrication and Properties of Zinc Silicate Phosphors through Solid State Reaction

2010 ◽  
Vol 160-162 ◽  
pp. 594-598
Author(s):  
Guo Jian Jiang ◽  
Jia Yue Xu ◽  
Hui Shen ◽  
Yan Zhang ◽  
Lin He Xu ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Solid State Reaction Method ◽  
Emission Peak ◽  
Zinc Silicate ◽  
Red Phosphor ◽  
Reaction Method ◽  
Long Afterglow ◽  
Luminescent Mechanism ◽  
Silicate Phosphors

Zinc silicate-based (Zn2SiO4:Eu3+) long afterglow phosphors were produced by solid state reaction method. The effects of borax and Eu2O3 additive on the properties of fabricated products have been studied. The results show that, there is not much difference in phase compositions within the borax additive amount; however, their SEM morphologies are different. Borax additive can increase the grain size of the product. Some sintering phenomena could be observed in the sample with Eu2O3 addition. The fluorescence spectroscopy results indicate that, the emission peak of the sample with Eu3+ additive located at 612nm, which may be a good candidate for red phosphor applications. The luminescent mechanism of Zn2SiO4:Eu3+ is also discussed.

Luminescence properties of dysprosium doped calcium magnesium silicate phosphor by solid state reaction method

2015 ◽  
Vol 649 ◽  
pp. 1329-1338 ◽  
Author(s):  
Ishwar Prasad Sahu ◽  
Priya Chandrakar ◽  
R.N. Baghel ◽  
D.P. Bisen ◽  
Nameeta Brahme ◽  
...  
Keyword(s):  
Solid State ◽  
Solid State Reaction ◽  
Magnesium Silicate ◽  
Solid State Reaction Method ◽  
Luminescence Properties ◽  
Reaction Method ◽  
Silicate Phosphor ◽  
Calcium Magnesium
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